Judges 7:15-16

15As soon as Gideon heard the telling of the dream and its interpretation, he worshiped. And he returned to the camp of Israel and said, "Arise, for the Lord has given the host of Midian into your hand."

16And he divided the 300 men into three companies and put trumpets into the hands of all of them and empty jars, with torches inside the jars.